Routing tool



Dec. 26, 1922. 1,439,829.

6. F. McCARTY.

ROUTING TOOL.

FILED JULY 25,1921.

FIGURE 1 INVENTOR ATTORNEY FIGURE (3 Patented Dec. 26,- 1922.

c nonen F. ancestry, or

, W i ii is herita e san Josn, onnrronnrn.

ROUTING TOOL- Application filed July 25, 1921.- Serial No. 487,372.

To all whom it may concern:

Be it known that I, GEORGE F. lvloCAnTY, citizen of theUnited States,and a resident of San dose, in the county of Santa Clara and State ofCalifornia, have invented certain new and useful Improvements in Rout- Iing Tools, of which the following is a specil'ication.

My invention relates to a type of rout g tool particularly for useinsetting hinges and similar devices which require a recessed bed.

In routing out the edge of a door or case ment window preparatory tomounting a hinge thereon, it is difiicult to form a bed of uniform depthand width because of the uncertain and varying characteristics of thewood being worked. ltis the object of the present invention to provide adevice whereby a recess of uniform depth and width may be quickly formedin wood of any character.

It is a further object to provide a device of the character indicatedthat can be adjusted for varying widths of recesses and that 18 alsoadjustable for varying depths of recesses.

In the drawing Figure 1 is a side elevation of the device in anoperative position, part broken away.

Figure 2 is a plan view of the same.

Figure 3 is an enlarged elevation of the cutter blade. 5

' Referring more particularly to the drawing 1 indicates a flat barmounted on handle 2 and provided with a slot lengthwise thereof as at 3.At a I show a blade supportlng member provided with a slot 5, a bolt 6carrying a wing nut 7 passing through slots 3 and 5 whereby the bar andsupporting member may be adjusted longitudinally as desired.

Supporting member 4 is provided with spaced pairs ofears as 88 and 9-9on one edge thereof, as shown to properly place the member on bar 1 andto serve as supports for the cutting blade. Extending upwardly on member1- in an opposite direction to ears 8 and 9 and arranged between eachpair of I cars, is a supporting element as 10 and 1 1 respectively, eachelement hav ng a vertically arranged slot formed therein as at 12 and13. c

At 14: is shown a blade havinga slot 15 formed therein, and at 16 is abolt engaging slots 12 and Band securely locking the said blade inposition on element 10. Blade 14:

fits snugly between ears 8S andhas an outwardly and rearwardly extendingcutting edge 17'. i i i i ln its practical application the head 18 ofbolt 6 "operates'as a gauge, the said bolt being moved backward orforward until the space between it and the cutting edge 17 of the knifeis the same as the required width of the recess, whereupon, the wing nut7 is tightened. The depth of the cut is now determined by raising orlowering blade 14 and tightening up bolt 16.

ing been made a second cutis made along line 22and the narrow stripbetween the two cuts removed. Since the grain of the wood in a door orwindowruns parallel with its longer'edge the cuts are across the grainand the narrow strip thus cut is readily removed. The first cuts havingbeen made successive cuts are made as indicated by the parallel dottedlines 23 and the several strips removed. VVhen a sufiicient number ofthe strips have been cut out it will be found that a recess of perfectlyuniform depth and width has been formed, only requiring a slightsmoothing at the edge 2% to prepare it for receiving a hinge leaf. Theroughness at edge 24-. 18 due of course to the fact that the,

cutting is across the grain of the wood and the short pieces between thesuccessive cuts are merely broken away. The bar 1 should, of course, bewide and long enough to provide a solid bearing surface on the work.

The blade supporting member i is here shown with duplicate blade holdingelements 10 so that the same may be reversed on bar 1, As shown in solidlines the device is arranged for a left-handed workman. For aright-handed workman the member 4 is arranged as shown in dotted linesat 25, in which case a right-handed blade must be used as at 26. T f

It may be seen from the foregoing that the device disclosed will quicklyand accurately do the work required; it is adjustable for any depth andwidth of recess; it is readily adapted for use for a right orleft-handed workman.

It is to be understood of course, that while I have herein shown anddescribed one particular embodiment of my invention, changes in form,cmlstruotion and xnethod of operm lie-n may be made within the scope ofthe appended claim.

I claim A routing tool comprising a bar having a slot formed thereinlongitudinally thereof, a blade holder having; a s10; formed thereinlongitudinally thereof, means for engaging both of? said slots andlocking; said bar and holder together, spaced pairs 01 ears formed onsaid holder 50 engage one edge of said ban". a blade supportingmeansupstanding on said holder between each pair of ears, and a verticallyadjustable blade arranged on each blade supporting means.

GEORGE F. D/ICCARTY.

